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Design of a system that cools a glycol+water solution down to -8°C for a food processing plant. The system is made of 3 270kW chillers, equipped with inverters for an improved load regulation, and uses ammonia reaching a C.O.P. of 2,26. The ammonia was picked for its great efficiency and very limited cost.

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The system is condensed with a evaporative cooling towers that is connected with the compressor circuit via a plate heat exchanger, placed close to the compressor to reduce the requider ammonia volume.

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The pumps that circulate the glycol are all equipped with inverters to reduce electrical consumption when possible. They are regulated with a differential pressure sensor to keep the pressure steady for all the users.

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All groups have been built in a workshop to save costs. The technical room was not very spacious and required a detailed analysis of the system layout. This layout also considers a future expansion of the system and leaves room for the common maintenance operations.

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The system proved stable over time. The high efficiency allowed the client to reduce its electricity consumption by a good margin.

On the DOWNLOAD page you can get the complete 3D model of this plant.